In the past four quarters, Google made a whopping $32.2 billion in advertising revenues. Today, WordStream, a provider of search marketing software, published a nice infographic showing the twenty most expensive keyword categories in AdWords. At the top of the list is “insurance”, with a top CPC (cost per click) of almost $55. There are other expensive keyword categories related to finance, including “loans” ($44 CPC), “mortgage” ($47 CPC), and “credit” ($36 CPC).
For more information go to: http://technorati.com/business/advertising/article/clicks-that-cost-how-google-made/